Engine & fuel system
2 documented faults — symptoms, causes and workshop fixes.
Engine oil pressure warning lamp flashing
Overview
- Affects
- All Euro V emission level models with 1.75 petrol engine, VIN →7311125.
- Remedy
- Fit new part
Symptoms
Loss of engine power.
Cause
Engine oil deteriorates prematurely due to incorrect oil specification.
Unsatisfactory design of turbocharger (TC) oil supply pipe.
Repair steps
- Fit new turbocharger (TC).
- Replace turbocharger (TC) oil supply pipe with modified version.
- Change engine oil. Ensure engine oil to manufacturer's latest specifications: 9.55535-GH2.
Parts
| Part | Part number | Qty |
|---|---|---|
| Turbocharger (TC) | 71794939 | 1 |
| Exhaust manifold gasket | 55255169 | 1 |
| Exhaust manifold nut | 55206854 | As required |
| Oil supply pipe | 55258147 | 1 |
| Oil supply pipe filter | 71769772 | As required |
| Oil return pipe seal | 55215229 | As required |
| Oil return pipe seal | 14457381 | As required |
| Turbocharger (TC) inlet hose gasket | 55212829 | 1 |
| Heat shield nut | 51828379 | As required |
| Catalytic converter O-ring | 51896690 | As required |
| Intercooler hose | 50517447 | 1 |
| Engine oil | Refer to manufacturer's specification | 5 litres |
Data: Motorwise Workshop. Bulletin 6.
Fuel filler flap difficult to open
Cause
Insufficient clearance fuel filler flap and fuel filler flap opening surround.
Repair
- Fit modified fuel filler flap.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Fuel filler flap | 50515465 | 1 |
Data: Motorwise Workshop. Bulletin 8.
Brakes
2 documented faults — symptoms, causes and workshop fixes.
Creaking noise from rear of vehicle when driving over rough roads
Overview
- Affects
- All models.
- Remedy
- Fit modified part
- Parts
- 4 parts
Cause
Excessive friction between handbrake cable and handbrake cable guide.
Repair
- Fit modified handbrake cable guides.
- Fit modified handbrake cables.
Parts4 parts
| Part | Part number | Qty |
|---|---|---|
| Handbrake cable, left | 50502989 | 1 |
| Handbrake cable, right | 50502987 | 1 |
| Handbrake cable guide | 50525251 | 2 |
| Rivet | 46547223 | 4 |
Data: Motorwise Workshop. Bulletin 2.
Poor driveability in adverse weather conditions (snow/ice) with snow chains fitted and all weather driving mode is activated
Overview
- Affects
- All models without auto shift manual (ASM) transmission, VIN →7149089.
- Remedy
- Software update
Cause
ABS/ESP control module software fault.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program ABS/ESP control module with upgraded software. Note: To carry out an effective repair a software upgrade will be required - refer to manufacturer.
Data: Motorwise Workshop. Bulletin 12.
Suspension & drivetrain
3 documented faults — symptoms, causes and workshop fixes.
Knocking/squeaking noise from rear suspension over uneven surfaces
Overview
- Affects
- All models with sport suspension.
- Remedy
- Fit modified part
- Parts
- 4 parts
Cause
Unsatisfactory design of rear shock absorber upper mounting bushes.
Repair
- Fit modified rear shock absorber upper mounting bushes.
- Apply a light coating of grease to shock absorber upper mounting bushes.
Parts4 parts
| Part | Part number | Qty |
|---|---|---|
| Shock absorber upper mounting bush | 50520153 | 4 |
| Shock absorber mounting nut set | 15503721 | 1 |
| Bolt set | 51806605 | 1 |
| Grease (Molikote PG21) | 71736440 | 1 |
Data: Motorwise Workshop. Bulletin 5.
Creaking noise from front suspension over uneven surfaces
Cause
Repair
- Apply grease to contact surfaces of front suspension lower arm rear bush.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Grease (Petronas SP 349) | Refer to manufacturer | 1 |
Data: Motorwise Workshop. Bulletin 7.
Abnormal noise from drivetrain when driving in 1st or 2nd gear
Overview
- Affects
- All models with 1.6/1.75/2.0 engines, →2015.
- Remedy
- Fit modified part
- Parts
- 9 parts
Cause
Unsatisfactory design of intermediate driveshaft and intermediate driveshaft support bearing mounting.
Repair
- Fit modified intermediate driveshaft.
- Fit modified intermediate driveshaft support bearing mounting.
Parts9 parts
| Part | Part number | Qty |
|---|---|---|
| Intermediate driveshaft (1,6 engine) | 55237698 | 1 |
| Intermediate driveshaft (1,75/2,0 engine) | 55237699 | 1 |
| Intermediate driveshaft (2,0 engine with ASM transmission) | 55237710 | 1 |
| Bolt | 51758186 | 2 |
| Intermediate driveshaft support bearing mounting | 51892626 | 1 |
| Bolt | 51741135 | 1 |
| Nut | 46841688 | 1 |
| Nut | 51836918 | 1 |
| Nut | 51806635 | 1 |
Data: Motorwise Workshop. Bulletin 11.
Steering
1 documented fault — symptoms, causes and workshop fixes.
Knocking/creaking noise from steering wheel when driving on straight roads
Cause
Poor material characteristics of steering wheel.
Repair
- Fit modified steering wheel.
Data: Motorwise Workshop. Bulletin 13.
Clutch & gearbox
4 documented faults — symptoms, causes and workshop fixes.
Stop-start system fails to automatically re-start engine
Cause
Clutch pedal position (CPP) switch faulty.
Repair
- Renew clutch pedal position (CPP) switch.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Clutch pedal position (CPP) switch | 50530554 | 1 |
Data: Motorwise Workshop. Bulletin 1.
Transmission shift indicator malfunction
Overview
- Affects
- All models with manual transmission.
- Remedy
- Software update
Cause
Engine control module (ECM) software fault.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program engine control module (ECM) with upgraded software.
Data: Motorwise Workshop. Bulletin 4.
Abnormal noise from transmission when pulling away or when accelerating/decelerating
Overview
- Affects
- All models with manual transmission or auto shift manual (ASM) transmission, VIN →7131429.
- Remedy
- Fit modified part
- Parts
- 2 parts
Cause
Excessive free play between differential gears.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Remove transmission from vehicle and dismantle. Fit modified differential. Reassemble transmission and refit.
Parts2 parts
| Part | Part number | Qty |
|---|---|---|
| Differential (manual transmission) | 55247379 | 1 |
| Differential (ASM transmission) | 55247380 | 1 |
Data: Motorwise Workshop. Bulletin 9.
Gear lever knob cap adrift due to broken retaining clips
Overview
- Affects
- All models with manual transmission, VIN →7083949.
- Remedy
- Fit modified part
- Parts
- 2 parts
Cause
Unsatisfactory design of gear lever knob cap.
Repair
- Clean gear lever knob and apply adhesive.
- Fit modified gear lever knob cap.
Parts2 parts
| Part | Part number | Qty |
|---|---|---|
| Gear lever knob cap | 55346345 | 1 |
| Adhesive | 55243750 | 1 |
Data: Motorwise Workshop. Bulletin 10.
Air conditioning & heating
1 documented fault — symptoms, causes and workshop fixes.
Erratic air conditioning performance
Overview
- Affects
- All models with air conditioning (AC).
- Remedy
- Fit new part
- Parts
- 1 part
Cause
AC evaporator temperature sensor failure.
Repair
- Cut wires 15 cm from AC evaporator temperature sensor.
- Fit new AC evaporator temperature sensor using heatshrink solder connectors and new wiring harness.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| AC evaporator temperature sensor repair kit | 50531622 | 1 |
Data: Motorwise Workshop. Bulletin 3.
Glossary
Technical terms used in this guide.
- ECM
- Engine control module — the electronic unit that manages the engine
- VIN
- Vehicle identification number — 17 characters, found at the base of the windscreen and on the V5C logbook
- AC
- Air conditioning — the system that cools the cabin
- ABS/ESP
- Anti-lock braking and electronic stability programme — the system that stops the wheels locking and keeps the vehicle stable
- TC
- Turbocharger — the exhaust-driven compressor that boosts engine power
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
- Driveshaft
- The shaft that takes drive from the differential out to a wheel
- Re-Program
- Update the software on a control module using the manufacturer's diagnostic tool
- Stop-Start
- The system that cuts the engine at idle and restarts it when you pull away
- Wiring Harness
- The bundled cables that carry power and signals around the vehicle
- Bush
- A rubber mounting that lets a suspension or body joint move without metal-to-metal contact
- Bushes
- Rubber mountings that let a suspension or body joint move without metal-to-metal contact
- Evaporator
- The air-conditioning heat exchanger in the dashboard that cools the cabin air
- Lower Arm
- A suspension link that locates the wheel at the bottom of the hub
Frequently asked questions
What are the common faults with the Alfa Romeo Giulietta 1.75 Quadrifoglio Verde/TBi//Veloce?
This guide contains 13 workshop bulletins for the Alfa Romeo Giulietta 1.75 Quadrifoglio Verde/TBi//Veloce. Of these, four concern the clutch and gearbox and three the suspension and drivetrain. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Alfa Romeo Giulietta 1.75 Quadrifoglio Verde/TBi//Veloce have these faults?
No. These are patterns documented across the model by workshops, not predictions for an individual vehicle. Where a fault applies only to certain vehicles or VIN ranges, that is listed with the fault.
Can I check for Alfa Romeo Giulietta 1.75 Quadrifoglio Verde/TBi//Veloce faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.